Port of https://chromium-review.googlesource.com/c/v8/v8/+/1817609.

Since we were already loading the undefined value a few lines above,
we could avoid loading it again.

Bug: v8:9771
Change-Id: I3761faacd22dabd69623179c1dc39f39c47ccb6b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1847356Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64166}